A boy and a girl are forced to join hands for all eternity!?In a land ravaged by an epidemic known as "Troy", the only people with healing arts capable of stopping the seizures caused by the disease are the Sisters. Although they have a high resistance to the disease, they are searching for a person who is truly immune, so that they can find a cure. The main character is Sister Elraine, one of the Sisters who becomes infected with Troy. But, when she touches Kiri, a seemingly ordinary boy, her seizures stop. Could he be the one!?

In volume 1 is included the oneshot Island:

A story that takes place on the day Aira turned 14, and learned the devastating truth about the island she lives on, which is completely surrounded by a huge wall...

23 Chapters is not enough to decide when a manga should get the axe.
Double Arts was discontinued despite being quite an original story. The few battles we got to see were nothing great, but were not like most manga.
I must give this manga a ZERO to the story because... well there's not much of a story anyway! Those bastards didn't let this manga evolve. It would have been a nice story.